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Reveal quantum correlation in complementary bases
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DOI：10.1038/srep04036.png)
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An essential feature of genuine quantum correlation is the simultaneous existence of correlation in complementary bases. We reveal this feature of quantum correlation by defining measures based on invariance under a basis change. For a bipartite quantum state, the classical correlation is the maximal correlation present in a certain optimum basis, while the quantum correlation is characterized as a series of residual correlations in the mutually unbiased bases. Compared with other approaches to quantify quantum correlation, our approach gives information-theoretical measures that directly reflect the essential feature of quantum correlation.
Keyword:
ENTANGLEMENT
STATE
DISCORD
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3.9
论文数:
28.0W
被引数:
83.5W
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